We have spent many years in the tropics. A friend gave me this tip early on and I ignored it for a long time 🙁 You are going to get dehydrated in the tropics. A large percentage of people will experience leg cramps. A good quality magnesium supplement and moderate hydration will cure leg cramps for most people. It really works! 🙂 🙂 Bring a magnesium supplement and take one at night. They can also help you sleep.